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Copyfree Works

The license status of some works may be more complex than it at first appears here. In some cases, the license status listed for a given work is the "primary" license under which it is distributed. In several cases, parts of the work may be distributed under other licenses -- potentially even non-copyfree licenses.

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Chibi-Schemepermalink

License Reference

Chibi-Scheme is a very small library intended for use as an extension and scripting language in C programs. The default language is R7RS Scheme, with support for all libraries.

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CHICKENpermalink

License Reference

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Gauchepermalink

License Reference

Gauche is an R7RS Scheme implementation developed to be a handy script interpreter, which allows programmers and system administrators to write small to large scripts for their daily chores. Quick startup, built-in system interface, and native multilingual support are some of its goals.

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scshpermalink

License Reference

Scsh is an open-source Unix shell embedded within Scheme, running on all major Unix platforms. It is a variant of Scheme 48 designed for writing real-life standalone Unix programs and shell scripts.

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TinySchemepermalink

License Reference

TinyScheme is a lightweight Scheme interpreter that implements as large a subset of R5RS as was possible without getting very large and complicated. It is meant to be used as an embedded scripting interpreter for other programs. A lot of functionality in TinyScheme is included conditionally, to allow developers freedom in balancing features and footprint.

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Ypsilon Schemepermalink

License Reference

Ypsilon is the implementation of Scheme Programming Language, which conforms to the latest standard R6RS* established in September 2007. Ypsilon achieves a remarkably short GC pause time and the best performance in parallel execution as it implements "mostly concurrent garbage collection", which is optimized for the multi-core CPU system.

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